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Named Entity Recognition (NER) in biomedical domains faces challenges due to data scarcity and imbalanced label distributions, especially with fine-grained entity types. We propose ReProCon, a novel few-shot NER framework that combines…

Computation and Language · Computer Science 2025-08-26 Jeongkyun Yoo , Nela Riddle , Andrew Hoblitzell

Named entity recognition (NER) is the task to detect and classify the entity spans in the text. When entity spans overlap between each other, this problem is named as nested NER. Span-based methods have been widely used to tackle the nested…

Computation and Language · Computer Science 2022-09-16 Hang Yan , Yu Sun , Xiaonan Li , Xipeng Qiu

Popular solutions to Named Entity Recognition (NER) include conditional random fields, sequence-to-sequence models, or utilizing the question-answering framework. However, they are not suitable for nested and overlapping spans with large…

Computation and Language · Computer Science 2022-03-08 Hagen Soltau , Izhak Shafran , Mingqiu Wang , Laurent El Shafey

Named entity recognition (NER) is one of the best studied tasks in natural language processing. However, most approaches are not capable of handling nested structures which are common in many applications. In this paper we introduce a novel…

Computation and Language · Computer Science 2019-08-12 Joseph Fisher , Andreas Vlachos

Medical named entity recognition (NER) has wide applications in intelligent healthcare. Sufficient labeled data is critical for training accurate medical NER model. However, the labeled data in a single medical platform is usually limited.…

Computation and Language · Computer Science 2020-03-26 Suyu Ge , Fangzhao Wu , Chuhan Wu , Tao Qi , Yongfeng Huang , Xing Xie

There has been a growing academic interest in the recognition of nested named entities in many domains. We tackle the task with a novel local hypergraph-based method: We first propose start token candidates and generate corresponding…

Computation and Language · Computer Science 2022-05-24 Yukun Yan , Sen Song

Mention detection is an important preprocessing step for annotation and interpretation in applications such as NER and coreference resolution, but few stand-alone neural models have been proposed able to handle the full range of mentions.…

Computation and Language · Computer Science 2020-06-23 Juntao Yu , Bernd Bohnet , Massimo Poesio

Named entity recognition has been extensively studied on English news texts. However, the transfer to other domains and languages is still a challenging problem. In this paper, we describe the system with which we participated in the first…

Computation and Language · Computer Science 2020-07-03 Lukas Lange , Heike Adel , Jannik Strötgen

Biomedical named entity recognition (NER) presents unique challenges due to specialized vocabularies, the sheer volume of entities, and the continuous emergence of novel entities. Traditional NER models, constrained by fixed taxonomies and…

Computation and Language · Computer Science 2025-05-22 Anthony Yazdani , Ihor Stepanov , Douglas Teodoro

In this paper, we present our approach to extracting structured information from unstructured Electronic Health Records (EHR) [2] which can be used to, for example, study adverse drug reactions in patients due to chemicals in their…

Computation and Language · Computer Science 2020-01-30 Amogh Kamat Tarcar , Aashis Tiwari , Vineet Naique Dhaimodker , Penjo Rebelo , Rahul Desai , Dattaraj Rao

Named Entity Recognition (NER) is an essential precursor task for many natural language applications, such as relation extraction or event extraction. Much of the NER research has been done on datasets with few classes of entity types (e.g.…

Computation and Language · Computer Science 2020-09-17 Parul Awasthy , Taesun Moon , Jian Ni , Radu Florian

This study is dedicated to exploring the application of prompt learning methods to advance Named Entity Recognition (NER) within the medical domain. In recent years, the emergence of large-scale models has driven significant progress in NER…

Computation and Language · Computer Science 2025-06-04 Jinzhu Yang

Named entity recognition (NER) is frequently addressed as a sequence classification task where each input consists of one sentence of text. It is nevertheless clear that useful information for the task can often be found outside of the…

Computation and Language · Computer Science 2020-12-18 Jouni Luoma , Sampo Pyysalo

In this work, we address the NER problem by splitting it into two logical sub-tasks: (1) Span Detection which simply extracts entity mention spans irrespective of entity type; (2) Span Classification which classifies the spans into their…

Computation and Language · Computer Science 2023-11-01 Jatin Arora , Youngja Park

Capturing sentence semantics plays a vital role in a range of text mining applications. Despite continuous efforts on the development of related datasets and models in the general domain, both datasets and models are limited in biomedical…

Computation and Language · Computer Science 2019-09-09 Qingyu Chen , Jingcheng Du , Sun Kim , W. John Wilbur , Zhiyong Lu

Single-cell RNA sequencing (scRNA-seq) has the potential to provide powerful, high-resolution signatures to inform disease prognosis and precision medicine. This paper takes an important first step towards this goal by developing an…

Quantitative Methods · Quantitative Biology 2021-10-15 Bryan He , Matthew Thomson , Meena Subramaniam , Richard Perez , Chun Jimmie Ye , James Zou

Although deep learning techniques have shown significant achievements, they frequently depend on extensive amounts of hand-labeled data and tend to perform inadequately in few-shot scenarios. The objective of this study is to devise a…

Computation and Language · Computer Science 2024-10-28 Leilei Su , Jian Chen , Yifan Peng , Cong Sun

We aimed to enhance the performance of a supervised model for clinical named-entity recognition (NER) using medical terminologies. In order to evaluate our system in French, we built a corpus for 5 types of clinical entities. We used a…

Computation and Language · Computer Science 2019-05-16 Ivan Lerner , Nicolas Paris , Xavier Tannier

Biomedical Named Entity Recognition presents significant challenges due to the complexity of biomedical terminology and inconsistencies in annotation across datasets. This paper introduces SRU-NER (Slot-based Recurrent Unit NER), a novel…

Computation and Language · Computer Science 2025-07-25 João Ruano , Gonçalo M. Correia , Leonor Barreiros , Afonso Mendes

Named Entity Recognition (NER) or the extraction of concepts from clinical text is the task of identifying entities in text and slotting them into categories such as problems, treatments, tests, clinical departments, occurrences (such as…

Computation and Language · Computer Science 2022-08-31 Namrata Nath , Sang-Heon Lee , Ivan Lee